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NSR database version of April 27, 2024.

Search: Author = Q.Zeng

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2024SU04      Chin.Phys.C 48, 034002 (2024)

M.Z.Sun, Y.Yu, X.P.Wang, M.Wang, J.G.Li, Y.H.Zhang, K.Blaum, Z.Y.Chen, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, W.J.Huang, H.Y.Jiao, H.H.Li, H.F.Li, Y.F.Luo, T.Liao, Yu.A.Litvinov, M.Si, P.Shuai, J.Y.Shi, Q.Wang, Y.M.Xing, X.Xu, H.S.Xu, F.R.Xu, Q.Yuan, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, X.H.Zhou, X.Zhou, M.Zhang, Q.Zeng

Ground-state mass of ²²Al and test of state-of-the-art ab initio calculations

NUCLEAR STRUCTURE ²²Al, ²²F; calculated test of the state-of-the-art ab initio valence-space in-medium similarity renormalization group calculations with four sets of interactions derived from the chiral effective field theory using excitation energies and mirror energy differences.

doi: 10.1088/1674-1137/ad1a0a
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2023LU04      Phys.Rev. C 108, 014302 (2023)

H.Y.Lu, Z.Liu, Z.H.Li, X.Wang, J.Li, H.Hua, H.Huang, W.Q.Zhang, Q.B.Zeng, X.H.Yu, T.H.Huang, M.D.Sun, J.G.Wang, X.Y.Liu, B.Ding, Z.G.Gan, L.Ma, H.B.Yang, Z.Y.Zhang, L.Yu, J.Jiang, K.L.Wang, Y.S.Wang, M.L.Liu, C.J.Lin, L.J.Sun, N.R.Ma, H.S.Xu, X.H.Zhou, G.Q.Xiao, F.S.Zhang

Reinvestigation of ²²²U in high-precision digital α-decay spectroscopy: Solution to the reduced decay-width anomaly

RADIOACTIVITY ²²²U(α) [from ¹⁸⁶W(⁴⁰Ar, 4n), E=80 MeV, followed by separation of fragments using SHANS separator at HRIFL-Lanzhou]; ²¹⁸Th, ²¹⁴Ra(α)[from ²²²U α decay chain]; measured Eα, Iα, evaporation residues (ER)-α correlations, T_1/2 using DSSD detectors; deduced reduced α-decay width, and analyzed using N_pN_n scheme. ²¹⁸Ac, ²¹⁹Th, ²²⁰Pa(α); measured Eα, and T_1/2. Systematics of reduced α-decay widths for g.s. to g.s. α transitions in even-even Z=84-92, N≥126 isotopes as function of N_pN_n. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.108.014302
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2023WA10      Phys.Rev.Lett. 130, 192501 (2023)

M.Wang, Y.H.Zhang, X.Zhou, X.H.Zhou, H.S.Xu, M.L.Liu, J.G.Li, Y.F.Niu, W.J.Huang, Q.Yuan, S.Zhang, F.R.Xu, Y.A.Litvinov, K.Blaum, Z.Meisel, R.F.Casten, R.B.Cakirli, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, Y.N.Song, M.Z.Sun, Q.Wang, Y.M.Xing, X.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, M.Zhang

Mass Measurement of Upper fp-Shell N = Z - 2 and N = Z - 1 Nuclei and the Importance of Three-Nucleon Force along the N = Z Line

ATOMIC MASSES ⁵⁸Zn, ⁶⁰Ga, ⁶²Ge, ⁶⁴As, ⁶⁶Se, ⁷⁰Kr, ⁶¹Ga, ⁶³Ge, ⁶⁵As, ⁶⁷Se, ⁷¹Kr, ⁷⁵Sr; measured time-of-flight (TOF); deduced mass excess (ME). A novel method of isochronous mass spectrometry, the Heavy Ion Research Facility in Lanzhou (HIRFL).

doi: 10.1103/PhysRevLett.130.192501
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2023XI01      Phys.Rev. C 107, 014304 (2023)

Y.M.Xing, C.X.Yuan, M.Wang, Y.H.Zhang, X.H.Zhou, Yu.A.Litvinov, K.Blaum, H.S.Xu, T.Bao, R.J.Chen, C.Y.Fu, B.S.Gao, W.W.Ge, J.J.He, W.J.Huang, T.Liao, J.G.Li, H.F.Li, S.Litvinov, S.Naimi, P.Shuai, M.Z.Sun, Q.Wang, X.Xu, F.R.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, M.Zhang, X.Zhou

Isochronous mass measurements of neutron-deficient nuclei from ¹¹²Sn projectile fragmentation

ATOMIC MASSES ⁶⁹As, ⁷³Br, ⁷⁵Kr, ⁷⁹Sr, ⁸¹Y, ⁸⁷Mo, ^87mMo, ⁹¹Ru, ^91mRu, ⁹³Rh, ^93mRh, ⁹⁵Pd, ^95mPd, ¹⁰³Sn; measured revolution times of stored ions, ToF; deduced mass excesses. ²⁷Al, ²⁹Si, ³¹P, ³³S, ³⁵Cl, ³⁷Ar, ^39,40K, ^41,42Ca, ^43,43mSc, ⁴⁶Ti, ^47,48V, ^50,49Cr, ^51,52,52mMn, ^51m,53,54Fe, ^55,56,57Co, ^57,58,59Ni, ^59,60,61Cu, ^62,63Zn, ^63,65Ga, ^65,66Ge, ^67,68,69,70Se, ⁷¹Br, ^73,74Kr, ^75,76,77Rb, ^77,78Sr, ⁸²Zr, ⁸⁴Nb, ⁸⁶Mo, ⁹⁰Ru, ⁹⁴Pd, ^97,97mAg, ⁹⁹Cd, ^101,101mIn; analyzed masses by comparing to previously measured values and AME2020 evaluation. ⁸⁷Mo, ⁹¹Ru, ⁹³Rh, ⁹⁵Pd; deduced isomer ratios, isomeric states and assigned J, π values as 1/2^- from systematics. ^91mRu; deduced mass excess based on the precise measured value for ⁹⁰Mo. ¹⁰⁴Sb, ¹⁰⁷Te, ¹⁰⁸I, ¹¹¹Xe, ¹¹²Cs; deduced mass excess based on measured mass excess value for ¹⁰³Sn and literature Q values for α- and p-decays. Systematics of 1/2^- isomers in Zr, Mo, Ru, Pd and Cd isotopes and comparison to shell-model calculations. Comparison to AME2020 and NUBASE2020. Isochronous mass spectrometry at the Cooler Storage Ring in Lanzhou of the fragments from ⁹Be(¹¹²Sn, X), E=400.88 MeV/nucleon reaction.

NUCLEAR REACTIONS ⁹Be(¹¹²Sn, X), E=400.88 MeV/nucleon; measured reaction products, number of produced fragments. ^87,87mMo, ^91,91mRu, ^93,93mRh, ^95,95mPd; deduced isomeric ratios.

doi: 10.1103/PhysRevC.107.014304
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2023ZH10      Eur.Phys.J. A 59, 27 (2023)

M.Zhang, X.Zhou, M.Wang, Y.H.Zhang, Yu.A.Litvinov, H.S.Xu, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, R.S.Sidhu, Y.N.Song, M.Z.Sun, S.Suzuki, Q.Wang, Y.M.Xing, X.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, X.H.Zhou

Bρ-defined isochronous mass spectrometry and mass measurements of ⁵⁸Ni fragments

ATOMIC MASSES ²³Al, ²⁵Si, ²⁷P, ³¹Cl, ³³Ar, ³⁵K, ³⁷Ca, ⁴¹Ti, ⁴³V, ⁴⁵Cr, ⁴⁷Mn, ⁴⁹Fe, ⁵¹Co, ⁵³Ni, ⁵⁵Cu, ⁴³Ti, ^44,44mV, ⁴⁶Cr, ⁴⁸Mn, ^50,51Fe, ^52,52mCo, ⁵⁴Ni, ⁵⁶Cu, ^24,24mAl, ^44,44mV, ^52,52mCo; measured revolution time spectrum, frequencies; deduced masses, energy differences between the ground states and isomers. The experimental cooler-storage ring CSRe in Lanzhou.

doi: 10.1140/epja/s10050-023-00928-6
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2023ZH34      Phys.Rev. C 108, 014614 (2023)

J.T.Zhang, P.Ma, Y.Huang, X.L.Tu, P.Sarriguren, Z.P.Li, Y.Kuang, W.Horiuchi, T.Inakura, L.Xayavong, Y.Sun, K.Kaneko, X.Q.Liu, K.Yue, C.J.Shao, Q.Zeng, B.Mei, P.Egelhof, Yu.A.Litvinov, M.Wang, Y.H.Zhang, X.H.Zhou, Z.Y.Sun

Matter radius of ⁷⁸Kr from proton elastic scattering at 153 MeV

NUCLEAR REACTIONS ¹H(⁷⁸Kr, p), E=152 MeV/nucleon; measured Ep, Ip; deduced σ(θ). ⁷⁸Kr; deduced point-matter radius, neutron skin thickness. Glauber model analysis. Comparison of the obtained σ to FRESCO calculations with the phenomenological OMP parameters (KD03). Collision in Cooler Storage Ring of the Heavy Ion Research Facility in Lanzhou (HIRFL-CSR) with molecular hydrogen-gas target. MICRON double-sided Si-strip detector (DSSD) used to measure the recoil protons.

doi: 10.1103/PhysRevC.108.014614
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2022GU07      Phys.Rev.Lett. 128, 242502 (2022)

S.Guo, B.Ding, X.H.Zhou, Y.B.Wu, J.G.Wang, S.W.Xu, Y.D.Fang, C.M.Petrache, E.A.Lawrie, Y.H.Qiang, Y.Y.Yang, H.J.Ong, J.B.Ma, J.L.Chen, F.Fang, Y.H.Yu, B.F.Lv, F.F.Zeng, Q.B.Zeng, H.Huang, Z.H.Jia, C.X.Jia, W.Liang, Y.Li, N.W.Huang, L.J.Liu, Y.Zheng, W.Q.Zhang, A.Rohilla, Z.Bai, S.L.Jin, K.Wang, F.F.Duan, G.Yang, J.H.Li, J.H.Xu, G.S.Li, M.L.Liu, Z.Liu, Z.G.Gan, M.Wang, Y.H.Zhang

Probing ^93mMo Isomer Depletion with an Isomer Beam

RADIOACTIVITY ⁹³Mo(IT) [from ¹²C(⁸⁶Kr, 5n), E=559 MeV]; measured decay products, Eγ, Iγ; deduced γ-ray energies and relative intensities, lack of isomer depletion, excitation probability. Comparison with available data. Nuclear excitation by electron capture (NEEC).

doi: 10.1103/PhysRevLett.128.242502
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2022HU09      Phys.Lett. B 833, 137345 (2022)

H.Huang, W.Q.Zhang, A.N.Andreyev, Z.Liu, D.Seweryniak, Z.H.Li, C.Y.Guo, A.E.Barzakh, P.Van Duppen, B.Andel, S.Antalic, M.Block, A.Bronis, M.P.Carpenter, P.Copp, J.G.Cubiss, B.Ding, D.T.Doherty, Z.Favier, F.Giacoppo, T.H.Huang, B.Kindler, F.G.Kondev, T.Lauritsen, J.G.Li, G.S.Li, B.Lommel, H.Y.Lu, M.Al Monthery, P.Mosat, Y.F.Niu, C.Raison, W.Reviol, G.Savard, S.Stolze, G.L.Wilson, H.Y.Wu, Z.H.Wang, F.R.Xu, Q.B.Zeng, X.H.Yu, F.F.Zeng, X.H.Zhou

First observation of the decay of the 13/2⁺ isomer in ¹⁸³Hg and B(M2) systematics of neutron transitions across the nuclear chart

RADIOACTIVITY ¹⁸³Hg(α) [from ¹⁸⁷Pb α decay]; ^187mPb(α) [from ¹⁴²Nd(⁵⁰Cr, 3n2pγ), E=255 MeV, followed by separation of fragments using Argonne gas-filled analyzer (AGFA) at the ATLAS-ANL facility]; measured reaction products, evaporation residues (EVRs), Eα, Iα, (EVR)α-correlations, αγ(t), Eγ, Iγ, x rays, T_1/2 using double-sided silicon strip detector (DSSD), and four HPGe clover detectors. ^183,183mHg; deduced levels, isomer, J, π, T_1/2 of g.s. and isomer, α branching ratio, K-conversion coefficient, multipolarity, B(M2), Nilsson configurations. ^187mPb; deduced T_1/2. Systematics of decay schemes of 13/2+ isomers in ^{175,177,179,181,183,185}Hg. Systematics of B(M2) values for 7/2-, 9/2+, 11/2- and 13/2+ isomers in even-Z, odd-N nuclei: ²⁵Mg, ³³Si, ^33,35S, ³⁷Ar, ³⁹Ca, ⁵⁹Cr, ⁶¹Fe, ^63,67Ni, ^63,65,67Zn, ^67,69,71Ge, ^69,71Se, ^97,99Mo, ^99,101,103Ru, ^103,105Pd, ^107,109Cd, ^{109,111,113,115}Sn, ¹⁵³Yb, ¹⁶¹Hf, ¹⁶³W, ¹⁶³Os, ^171,189,191Pt, ^{181,183,201,203,205}Hg, ²⁰⁹Pb, ^205,207,211Po, ^207,209,213Rn, ^209,211Ra, ^211,213Th.

doi: 10.1016/j.physletb.2022.137345
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2022WA39      Phys.Rev. C 106, L051301 (2022)

M.Wang, M.Zhang, X.Zhou, Y.H.Zhang, Yu.A.Litvinov, H.S.Xu, R.J.Chen, H.Y.Deng, C.Y.Fu, W.W.Ge, H.F.Li, T.Liao, S.A.Litvinov, P.Shuai, J.Y.Shi, M.Si, R.S.Sidhu, Y.N.Song, M.Z.Sun, S.Suzuki, Q.Wang, Y.M.Xing, X.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, X.H.Zhou

Bρ-defined isochronous mass spectrometry: An approach for high-precision mass measurements of short-lived nuclei

ATOMIC MASSES ^44,44mV, ⁴⁶Cr, ⁴⁸Mn, ^50,51Fe, ^52,52mCo, ⁵⁴Ni, ⁵⁶Cu, ⁴³Ti; measured velocity and revolution time of stored ions; deduced mass excess. ⁵²Co; deduced S(p). Introduced technique for broadband high-precision mass spectrometry based on simultaneous determinations of revolution time and velocity of short-lived stored ions at the cooler storage ring CSRe in Lanzhou.Comparison to AME2020 values and other experimental results.

RADIOACTIVITY ⁴⁶Cr, ⁵⁰Fe, ⁵⁴Ni(EC); deduced Q values, ft using the values of mass excess obtained in this paper.

doi: 10.1103/PhysRevC.106.L051301
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2022ZE02      Phys.Rev. C 106, 034307 (2022)

Q.B.Zeng, S.Guo, Z.Liu, J.G.Li, H.H.Li, J.G.Wang, Z.Y.Zhang, L.Ma, Y.H.Qiang, M.H.Huang, G.S.Li, Y.D.Fang, M.L.Liu, B.Ding, Y.Zheng, J.H.Li, H.Y.Lu, W.Q.Zhang, K.L.Wang, X.Y.Liu, H.Huang, F.F.Zeng, X.H.Yu, A.Rohilla, J.F.Huang, H.L.Fan, C.Qi, C.X.Yuan, C.M.Petrache, E.A.Lawrie, W.Zuo, Z.G.Gan, X.H.Zhou

Configurations of the low-lying states in ¹⁴⁶Eu

RADIOACTIVITY ^146mEu(IT) [from ¹²⁴Sn(²⁷Al, 5n), E=127 MeV, followed by mass-separation of evaporation residues (ERs) using the SHANS separator at the Sector-Focusing Cyclotron (SFC) of HIRFL-Lanzhou]; measured Eγ, Iγ, γγ-coin, isomer and level T_1/2 by γ(t) and γγ(t) fast-timing method using three LaBr₃(Ce) detectors, one coaxial and one Clover HPGe detectors, and analyzed using mirror symmetric centroid difference (MSCD) method. ¹⁴⁶Eu; deduced levels, J, π, T_1/2 of 6- levels and a 9+ isomer, multipolarities, upper limits of multipole mixing ratios, B(M1), spherical configurations. ¹⁴⁶Sm; measured level T_1/2 of the first 2+ state as a test case for measurements of short half-lives for levels in ¹⁴⁶Eu. Comparison with shell model calculations using several different effective interactions, and with previous experimental results. Systematics of levels and B(M1) values in N=83 isotones ¹⁴²Pr, ¹⁴⁴Pm, ¹⁴⁶Eu.

doi: 10.1103/PhysRevC.106.034307
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2022ZH22      Phys.Lett. B 829, 137129 (2022)

W.Q.Zhang, A.N.Andreyev, Z.Liu, D.Seweryniak, H.Huang, Z.H.Li, J.G.Li, C.Y.Guo, D.T.Doherty, A.E.Barzakh, P.Van Duppen, J.G.Cubiss, B.Andel, S.Antalic, M.Block, A.Bronis, M.P.Carpenter, P.Copp, B.Ding, Z.Favier, F.Giacoppo, T.H.Huang, X.H.Yu, B.Kindler, F.G.Kondev, T.Lauritsen, G.S.Li, B.Lommel, H.Y.Lu, M.Al Monthery, P.Mosat, Y.F.Niu, C.Raison, W.Reviol, G.Savard, S.Stolze, G.L.Wilson, H.Y.Wu, Z.H.Wang, F.R.Xu, Q.B.Zeng, X.H.Zhou

First observation of a shape isomer and a low-lying strongly-coupled prolate band in neutron-deficient semi-magic ¹⁸⁷Pb

NUCLEAR REACTIONS ¹⁴²Nd(⁵⁰Cr, 3n2p)¹⁸⁷Pb, E=255 MeV beam from ATLAS-ANL facility, followed by separation of evaporation residues (EVRs) using Argonne Gas-Filled Analyzer; measured Eα, Eγ, Iγ, x rays, αγ-coin, γγ-coin, T_1/2 of a new low-energy microsec-isomer by αγ(t) using Gammasphere for γ detection and double-sided silicon strip detector (DSSD) for EVRs and α particles. Recoil-decay tagging (RDT) and isomer-decay tagging (IDT) methods. ¹⁸⁷Pb; deduced high-spin levels, J, π, isomer, K-conversion coefficient, multipolarity, bands, B(E2), B(M1)/B(E2), triple-shape coexistence at low energy. Comparison with band structure in ¹⁸⁵Hg. Systematics of aligned angular momenta plots and experimental Routhians for bands in ^183,185Hg, ¹⁸⁷Pb. ¹⁸⁴Hg, ¹⁸⁶Pb, ¹⁸⁷Tl; observed γ rays. ^186,187m,188Pb; observed α-decay peaks.

doi: 10.1016/j.physletb.2022.137129
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2022ZH46      Phys.Rev. C 106, 024317 (2022)

W.Q.Zhang, A.N.Andreyev, Z.Liu, D.Seweryniak, H.Huang, Z.H.Li, J.G.Li, C.Y.Guo, A.E.Barzakh, P.Van Duppen, M.Al Monthery, B.Andel, S.Antalic, M.Block, A.Bronis, M.P.Carpenter, P.Copp, J.G.Cubiss, B.Ding, D.T.Doherty, Z.Favier, F.Giacoppo, T.H.Huang, B.Kindler, F.G.Kondev, T.Lauritsen, G.S.Li, B.Lommel, H.Y.Lu, P.Mosat, Y.F.Niu, C.Raison, W.Reviol, G.Savard, S.Stolze, G.L.Wilson, H.Y.Wu, Z.H.Wang, F.R.Xu, X.H.Yu, Q.B.Zeng, X.H.Zhou

Identification of excited states in ¹⁸⁸Bi and ¹⁸⁸Po

NUCLEAR REACTIONS ¹⁴²Nd(⁵⁰Cr, 3np)¹⁸⁸Bi, (⁵⁰Cr, 4n)¹⁸⁸Po, E=255 MeV; measured evaporation residues (EVRs), Eα, Eγ, Iγ, x rays, (EVR)γ-coin, αγ-coin, γγ-coin, using four clover HPGe detectors, Gammasphere array with 64 Compton-suppressed HPGe detectors, and DSSD and DSSD+Sibox at the ATLAS-ANL accelerator facility. ^{186,187,187m,188}Pb, ^189,189mBi; deduced recoil-decay tagging (RDT) γ-ray yields. ¹⁸⁸Bi; deduced levels, J, π, isomer, T_1/2 and decay modes of isomer, K-conversion coefficients, multipolarities, configurations. ¹⁸⁸Po; deduced energy of the first 2+ level. ¹⁸⁶Pb; deduced levels, J, π. ^183,184,186Hg, ^{186,187,187m,188}Pb, ^188,189,189mBi; observed Eα. Systematics of 9/2-, 1/2+, 7/2- and 13/2+ level energies in ^{185,187,189,191,193,195}Bi, and those of first 2+, 4+, 6+ and 8+, second 0+, 2+ and 4+ in ^{188,190,192,194,196,198,200,202,204,206,208,210}Po.

doi: 10.1103/PhysRevC.106.024317
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2021ZH50      Phys.Rev. C 104, 034303 (2021)

J.T.Zhang, X.L.Tu, P.Sarriguren, K.Yue, Q.Zeng, Z.Y.Sun, M.Wang, Y.H.Zhang, X.H.Zhou, Yu.A.Litvinov

Systematic trends of neutron skin thickness versus relative neutron excess

NUCLEAR STRUCTURE ^{40,42,44,46,48}Ca, ^58,60,62,64Ni, ^{106,110,112,114,116}Cd, ^{112,114,116,118,120,122,124}Sn, ^204,206,208Pb; compiled and evaluated experimental data for skin thicknesses from experiments involving interaction cross sections, antiprotonic atom, giant dipole resonance (GDR), spin dipole resonance (SDR), and pygmy dipole resonance (PDR); deduced trends of experimental neutron skin thickness versus relative neutron excess for isotopic chains, and compared with calculations using deformed Skyrme Hartree-Fock + Bardeen-Cooper-Schrieffer model with SLy4 force. Relevance to role of skin thicknesses in constraining the parameters of the equation of state (EOS) of isospin asymmetric nuclear matter.

doi: 10.1103/PhysRevC.104.034303
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2020FU05      Phys.Rev. C 102, 054311 (2020)

C.Y.Fu, Y.H.Zhang, M.Wang, X.H.Zhou, Yu.A.Litvinov, K.Blaum, H.S.Xu, X.Xu, P.Shuai, Y.H.Lam, R.J.Chen, X.L.Yan, X.C.Chen, J.J.He, S.Kubono, M.Z.Sun, X.L.Tu, Y.M.Xing, Q.Zeng, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

Mass measurements for the T_z= -2 fp-shell nuclei ⁴⁰Ti, ⁴⁴Cr, ⁴⁶Mn, ⁴⁸Fe, ⁵⁰Co, and ⁵²Ni

ATOMIC MASSES ⁴⁰Ti, ⁴⁴Cr, ⁴⁶Mn, ⁴⁸Fe, ⁵⁰Co, ⁵²Ni; measured revolution time spectrum of stored ions by time-of-flight detectors, and mass excesses using isochronous mass spectrometry at CSRe-HIRFL, Lanzhou. Isotopes produced in ⁹Be(⁵⁸Ni, X), E=468 MeV/nucleon reaction and separated using RIBLL2. Comparison with AME-2016 evaluation, and with theoretical calculations using four mass-models. A=44, 46, 50, 52; analyzed isospin multiplet mass equation (IMME) and T=2 quintets. ⁴⁴V; proposed isobaric analog state (IAS).

RADIOACTIVITY ⁴⁴Cr(β⁺), (β⁺p); analyzed decay scheme; deduced β feedings, logft values, B(GT) from the branching ratios of β⁺-delayed protons and Q values.

doi: 10.1103/PhysRevC.102.054311
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2019XU09      Phys.Rev. C 99, 064303 (2019)

X.Xu, M.Wang, K.Blaum, J.D.Holt, Yu.A.Litvinov, A.Schwenk, J.Simonis, S.R.Stroberg, Y.H.Zhang, H.S.Xu, P.Shuai, X.L.Tu, X.H.Zhou, F.R.Xu, G.Audi, R.J.Chen, X.C.Chen, C.Y.Fu, Z.Ge, W.J.Huang, S.Litvinov, D.W.Liu, Y.H.Lam, X.W.Ma, R.S.Mao, A.Ozawa, B.H.Sun, Y.Sun, T.Uesaka, G.Q.Xiao, Y.M.Xing, T.Yamaguchi, Y.Yamaguchi, X.L.Yan, Q.Zeng, H.W.Zhao, T.C.Zhao, W.Zhang, W.L.Zhan

Masses of neutron-rich ^52-54Sc and ^{54, 56}Ti nuclides: The N=32 subshell closure in scandium

ATOMIC MASSES ^52,53,54Sc, ^54,56Ti; measured mass excesses using isochronous mass spectrometry at CRSe-HIRFL, Lanzhou. Isotopes produced in ⁹Be(⁸⁶Kr, X), E=460.65 MeV/nucleon reaction and separated using RIBLL2. Comparison with AME-2012 evaluation, and results from six previous experiments, and with valence-space in-medium similarity renormalization group (VS-IMSRG) calculations. Systematics of S(2n) values in N=27-34 K, Ca, Sc, Ti isotopic chains, and those of empirical shell gaps in N=24-34 K, Ca, Sc, Ti isotopic chains and Z=19-25 N=32 isotones.

doi: 10.1103/PhysRevC.99.064303
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2019XU13      Phys.Rev. C 100, 051303 (2019)

X.Xu, J.H.Liu, C.X.Yuan, Y.M.Xing, M.Wang, Y.H.Zhang, X.H.Zhou, Yu.A.Litvinov, K.Blaum, R.J.Chen, X.C.Chen, C.Y.Fu, B.S.Gao, J.J.He, S.Kubono, Y.H.Lam, H.F.Li, M.L.Liu, X.W.Ma, P.Shuai, M.Si, M.Z.Sun, X.L.Tu, Q.Wang, H.S.Xu, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, P.Zhang, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, S.Naimi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, K.Kaneko, Y.Sun, F.R.Xu

Masses of ground and isomeric states of ¹⁰¹In and configuration-dependent shell evolution in odd-$A$ indium isotopes

ATOMIC MASSES ¹⁰¹In, ^101mIn; measured mass excesses using storage-ring based isochronous mass spectrometry technique; deduced energy of the isomeric state. Comparison with systematic values in AME-2016 values. Systematics of 1/2- isomeric states in ^{101,103,105,107,109,111}In, data from the present experiment for ¹⁰¹In and from the ENSDF database for others.

NUCLEAR STRUCTURE ^{101,103,105,107,109,111,113}In; calculated energies of the 1/2- isomeric levels, neutron occupation numbers for 1/2- and 9/2+ levels, neutron effective single-particle energies of ν1g_7/2 with respect to ν2d_5/2 for 9/2+ and 1/2- levels using state-of-the-art shell-model calculations. Comparison with available experimental data.

NUCLEAR REACTIONS ⁹Be(¹¹²Sn, X)³¹P/³³S/³⁵Cl/³⁷Ar/³⁹K/⁵⁸Ni/⁶⁰Cu/⁶²Zn/⁶⁴Ga/⁶⁶Ge/⁶⁸As/⁷⁰Se/⁷²Br/⁷⁴Rb/⁷⁶Rb/⁷⁸Sr/⁸⁰Y/⁸⁹Tc/⁹¹Ru/^91mRu/⁹³Rh/⁹⁵Pd/^95mPd/⁹⁷Ag/⁹⁹Cd/¹⁰¹In/^101mIn/¹⁰³Sn, E=400.88 MeV/nucleon; measured reaction products selected and analyzed by RIBLL2 separator, and revolution time spectrum at the Cooler Storage Ring (CSR) accelerator complex of HIRFL-Lanzhou facility.

doi: 10.1103/PhysRevC.100.051303
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2018FU11      Phys.Rev. C 98, 014315 (2018)

C.Y.Fu, Y.H.Zhang, X.H.Zhou, M.Wang, Yu.A.Litvinov, K.Blaum, H.S.Xu, X.Xu, P.Shuai, Y.H.Lam, R.J.Chen, X.L.Yan, T.Bao, X.C.Chen, H.Chen, J.J.He, S.Kubono, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, P.Zhang, Q.Zeng, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

Masses of the T_z = -3/2 nuclei ²⁷P and ²⁹S

ATOMIC MASSES ²⁷P, ²⁹S; measured revolution time spectrum, and mass excesses using isochronous mass spectrometry (IMS) technique at Cooler Storage Ring (CSR) of HIRFL-Lanzhou facility. ²⁹S, ²⁹P, ²⁹Si, ²⁹Al; analyzed linear and quadratic coefficients of the isobaric multiplet mass equation (IMME). Comparison with AME-2016 values. ²⁷P, ²⁹S; isotopes produced in ⁹Be(⁵⁸Ni, X), E=468 MeV/nucleon reaction, and using RIBLL2 fragment separator.

doi: 10.1103/PhysRevC.98.014315
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2018TU03      Phys.Rev. C 97, 014321 (2018)

X.L.Tu, X.C.Chen, J.T.Zhang, P.Shuai, K.Yue, X.Xu, C.Y.Fu, Q.Zeng, X.Zhou, Y.M.Xing, J.X.Wu, R.S.Mao, L.J.Mao, K.H.Fang, Z.Y.Sun, M.Wang, J.C.Yang, Yu.A.Litvinov, K.Blaum, Y.H.Zhang, Y.J.Yuan, X.W.Ma, X.H.Zhou, H.S.Xu

First application of combined isochronous and Schottky mass spectrometry: Half-lives of fully ionized ⁴⁹Cr²⁴⁺ and ⁵³Fe²⁶⁺ atoms

RADIOACTIVITY ⁴⁹Cr, ⁵³Fe(β⁺)[from ⁹Be(⁵⁸Ni, X), E=430.8 MeV/nucleon followed by separation of fragments using projectile fragment separator RIBLL2]; measured half-life of bare (fully-ionized) ions by isochronous and Schottky mass spectrometry technique using experimental cooler storage ring (CSRe) at the Heavy Ion Research Facility, Lanzhou (HIRFL-CSR). Comparison with half-lives of neutral atoms.

doi: 10.1103/PhysRevC.97.014321
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2018XI04      Phys.Lett. B 781, 358 (2018)

Y.M.Xing, K.A.Li, Y.H.Zhang, X.H.Zhou, M.Wang, Yu.A.Litvinov, K.Blaum, S.Wanajo, S.Kubono, G.Martinez-Pinedo, A.Sieverding, R.J.Chen, P.Shuai, C.Y.Fu, X.L.Yan, W.J.Huang, X.Xu, X.D.Tang, H.S.Xu, T.Bao, X.C.Chen, B.S.Gao, J.J.He, Y.H.Lam, H.F.Li, J.H.Liu, X.W.Ma, R.S.Mao, M.Si, M.Z.Sun, X.L.Tu, Q.Wang, J.C.Yang, Y.J.Yuan, Q.Zeng, P.Zhang, X.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, C.Frohlich, T.Rauscher, F.-K.Thielemann, B.H.Sun, Y.Sun, A.C.Dai, F.R.Xu

Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes

ATOMIC MASSES ^78,79Y, ^80,81Zr, ^82,83,84Nb, ⁸⁴Mo; measured revolution time spectrum; deduced mass excess values and proton separation energies. Comparison with available data.

doi: 10.1016/j.physletb.2018.04.009
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2018ZH29      Phys.Rev. C 98, 014319 (2018)

Y.H.Zhang, P.Zhang, X.H.Zhou, M.Wang, Yu.A.Litvinov, H.S.Xu, X.Xu, P.Shuai, Y.H.Lam, R.J.Chen, X.L.Yan, T.Bao, X.C.Chen, H.Chen, C.Y.Fu, J.J.He, S.Kubono, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, Q.Zeng, X.Zhou, W.L.Zhan, S.Litvinov, K.Blaum, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

Isochronous mass measurements of T_z = -1 fp-shell nuclei from projectile fragmentation of ⁵⁸Ni

ATOMIC MASSES ⁴³Ti, ^44,44m,45V, ^46,47Cr, ^48,49Mn, ^50,51Fe, ^52,52mCo, ⁵⁴Ni, ⁵⁶Cu; measured time revolution spectra, and mass excesses using isochronous mass spectrometry (IMS) technique using Cooler Storage Ring (CSRm) at HIRFL-Lanzhou. Comparison with AME-2012 evaluation, and with predictions of several mass models. ^52,52mCo, ^44,44mV; deduced precise energies of the isomeric states from direct mass measurements, and compared with previously known values. ^52,52mCo, ⁵²Mn; deduced revised level energies in ⁵²Co from new mass measurements for ^52,52mCo and known level energies in ⁵²Mn mirror nucleus. ⁵⁶Co, ⁵⁶Cu; deduced revised ⁵⁶Cu level energies from new mass measurement for ⁵⁶Cu and using known level energies of ⁵⁶Co mirror nucleus. ⁵²Co, ⁵²Fe, ⁵²Mn, ⁵²Cr; analyzed quadratic and cubic fit coefficients of the isobaric multiplet mass equation (IMME). Discussed impact of new mass measurements on different aspects in nuclear structure. Isotopes produced in ⁹Be(⁵⁸Ni, X), E=467.91 MeV/nucleon reaction, and fragments separated using RIBLL2 separator at Lanzhou.

doi: 10.1103/PhysRevC.98.014319
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2017CH37      Phys.Rev. C 96, 034302 (2017)

X.C.Chen, Q.Zeng, Yu.A.Litvinov, X.L.Tu, P.M.Walker, M.Wang, Q.Wang, K.Yue, Y.H.Zhang

Statistical approaches to lifetime measurements with restricted observation times

RADIOACTIVITY ^94mRu(IT); measured and analyzed half-life of fully-ionized (bare) ions of 8+ isomeric state at 2644 keV using generic statistical methods based on frequentism and Bayesianism, and various filtering and sorting scenarios at the Experimental Cooler Storage Ring (CSRe) in Lanzhou, China; deduced ICC. Comparison with calculations using BrIcc code. Proposed a complete statistical analysis for half-life extraction. See also 2017Ze02 from the same laboratory for details of experimental description.

doi: 10.1103/PhysRevC.96.034302
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2017TU01      Phys.Rev. C 95, 014610 (2017)

X.L.Tu, A.Kelic-Heil, Yu.A.Litvinov, Zs.Podolyak, Y.H.Zhang, W.J.Huang, H.S.Xu, K.Blaum, F.Bosch, R.J.Chen, X.C.Chen, C.Y.Fu, B.S.Gao, Z.Ge, Z.G.Hu, D.W.Liu, S.A.Litvinov, X.W.Ma, R.S.Mao, B.Mei, P.Shuai, B.H.Sun, Y.Sun, Z.Y.Sun, P.M.Walker, M.Wang, N.Winckler, J.W.Xia, G.Q.Xiao, Y.M.Xing, X.Xu, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Q.Zeng, W.Zhang, H.W.Zhao, T.C.Zhao, X.H.Zhou

Application of isochronous mass spectrometry for the study of angular momentum population in projectile fragmentation reactions

NUCLEAR REACTIONS ⁹Be(⁷⁸Kr, X)⁵³Fe/^53mFe/⁵³Co/^53mCo, E=479.4 MeV/nucleon; measured revolution time spectra of the isomeric and ground states of ⁵³Co and ⁵³Fe using isochronous mass spectrometry (IMS) technique at HIRFL-CSR-Lanzhou facility; deduced isomeric ratios for the 19/2 state, and compared with the predictions of theoretical calculations using ABRABLA07 code. ⁵³Fe; calculated production probability of ⁵³Fe versus spin using ABRABLA07 code for the ⁵⁸Ni, ⁷⁸Kr, ⁸⁴Kr, and ¹¹²Sn projectiles.

doi: 10.1103/PhysRevC.95.014610
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2017ZE02      Phys.Rev. C 96, 031303 (2017)

Q.Zeng, M.Wang, X.H.Zhou, Y.H.Zhang, X.L.Tu, X.C.Chen, X.Xu, Yu.A.Litvinov, H.S.Xu, K.Blaum, R.J.Chen, C.Y.Fu, Z.Ge, W.J.Huang, H.F.Li, J.H.Liu, B.Mei, P.Shuai, M.Si, B.H.Sun, M.Z.Sun, Q.Wang, G.Q.Xiao, Y.M.Xing, T.Yamaguchi, X.L.Yan, J.C.Yang, Y.J.Yuan, Y.D.Zang, P.Zhang, W.Zhang, X.Zhou

Half-life measurement of short-lived ^94m₄₄Ru⁴⁴⁺ using isochronous mass spectrometry

RADIOACTIVITY ^94mRu(IT)[from ⁹Be(¹¹²Sn, X), E=376.42 MeV/nucleon]; measured half-life of the fully-ionized (bare) ions of 8+ isomeric state at 2644 keV at the Experimental Cooler Storage Ring (CSRe) in Heavy Ion Research Facility (HIRFL), Lanzhou; deduced ICC. Comparison with calculations using BrIcc code, and with theoretical predictions. See also 2017Ch37 from the same laboratory for a detailed statistical analysis for extraction of half-life from experimental data.

ATOMIC MASSES ⁹⁴Ru, ^94mRu; measured mass excesses of the isomer and the ground state of ⁹⁴Ru using isochronous mass spectrometry (IMS) at Heavy Ion Research Facility (HIRFL), Lanzhou, and compared with AME-2016.

doi: 10.1103/PhysRevC.96.031303
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2017ZH12      Phys.Lett. B 767, 20 (2017)

P.Zhang, X.Xu, P.Shuai, R.J.Chen, X.L.Yan, Y.H.Zhang, M.Wang, Yu.A.Litvinov, K.Blaum, H.S.Xu, T.Bao, X.C.Chen, H.Chen, C.Y.Fu, J.J.He, S.Kubono, Y.H.Lam, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, J.C.Yang, Y.J.Yuan, Q.Zeng, X.Zhou, X.H.Zhou, W.L.Zhan, S.Litvinov, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, F.R.Xu

High-precision Q_EC values of superallowed 0⁺ → 0⁺β-emitters ⁴⁶Cr, ⁵⁰Fe and ⁵⁴Ni

ATOMIC MASSES ⁴²Ti, ⁴⁶Cr, ⁴⁸Mn, ⁵⁰Fe, ⁵⁴Ni; measured the revolution time spectrum; deduced precision mass excesses, corrected log ft values. Comparison with AME12 evaluated data.

doi: 10.1016/j.physletb.2017.01.039
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2016XU10      Phys.Rev.Lett. 117, 182503 (2016)

X.Xu, P.Zhang, P.Shuai, R.J.Chen, X.L.Yan, Y.H.Zhang, M.Wang, Yu.A.Litvinov, H.S.Xu, T.Bao, X.C.Chen, H.Chen, C.Y.Fu, S.Kubono, Y.H.Lam, D.W.Liu, R.S.Mao, X.W.Ma, M.Z.Sun, X.L.Tu, Y.M.Xing, J.C.Yang, Y.J.Yuan, Q.Zeng, X.Zhou, X.H.Zhou, W.L.Zhan, S.Litvinov, K.Blaum, G.Audi, T.Uesaka, Y.Yamaguchi, T.Yamaguchi, A.Ozawa, B.H.Sun, Y.Sun, A.C.Dai, F.R.Xu

Identification of the Lowest T=2, J^π = 0⁺ Isobaric Analog State in ⁵²Co and Its Impact on the Understanding of β-Decay Properties of ⁵²Ni

NUCLEAR REACTIONS Be(⁵⁸Ni, X)⁵²Co, E=467.91 MeV/nucleon; measured reaction products, TOF; deduced atomic masses, energy of T=2 isobaric analog state, level scheme. Comparison with shell model calculations using GXPF1J interaction.

doi: 10.1103/PhysRevLett.117.182503
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2015XU14      Chin.Phys.C 39, 104001 (2015)

X.Xu, M.Wang, Y.-H.Zhang, H.-S.Xu, P.Shuai, X.-L.Tu, Y.A.Litvinov, X.-H.Zhou, B.-H.Sun, Y.-J.Yuan, J.-W.Xia, J.-C.Yang, K.Blaum, R.-J.Chen, X.-C.Chen, C.-Y.Fu, Z.Ge, Z.-G.Hu, W.-J.Huang, D.-W.Liu, Y.-H.Lam, X.-W.Ma, R.-S.Mao, T.Uesaka, G.-Q.Xiao, Y.-M.Xing, T.Yamaguchi, Y.Yamaguchi, Q.Zeng, X.-L.Yan, H.-W.Zhao, T.-C.Zhao, W.Zhang, W.-L.Zhan

Direct mass measurements of neutron-rich ⁸⁶Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes

ATOMIC MASSES ²³F, ²⁵Ne, ³³Al, ³⁶Si, ³⁸P, ^42,43Cl, ^52,53,54Sc, ^54,56Ti, ^57,58V, ⁶¹Cr, ⁶⁹Co; measured corrected revolution time spectrum; deduced mass excess values. Comparison with AME12 mass evaluation.

doi: 10.1088/1674-1137/39/10/104001
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2013ZE01      Chin.Phys.C 37, 054102 (2013)

Q.-G.Zeng, S.Yang, C.-X.Yue, L.-S.Chen

Production and decay of the 125 GeV Higgs boson in the littlest Higgs model with T-parity

doi: 10.1088/1674-1137/37/5/054102
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Note: The following list of authors and aliases matches the search parameter Q.Zeng: , Q.B.ZENG, Q.G.ZENG